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3Com Hub 1000 SX manual Index, Symbols, Numbers

Models: Hub 1000 SX

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INDEX

INDEX

Symbols

% BW usage meter 2-6

Numbers

1000BASE-CX 1-2

1000BASE-LX 1-2

1000BASE-SX 1-2

1000BASE-X cables and connectors 3-1

3C16925 Gigabit Ethernet SX uplink module 3-33C985-SX Gigabit EtherLink Server NIC 3-23Com Bulletin Board Service (3ComBBS) C-13Com sales ofﬁces C-4

3Com URL C-1

3ComFacts C-2

3ComForum C-3

A

AC

power 2-9

power cord 2-1,2-3ACTIVITY LED 2-6

Advanced Redundant Power System (RPS) 2-3,2-8cabling options 2-9

calculating power for 2-11conﬁguration options 2-10Power Modules 2-9

aggregating devices servers 3-2switches 3-3

asymmetric ﬂow control 3-6deﬁnition 1-3

auto-negotiation deﬁned 1-3disabling A-8

B

backbone 1-2, 3-2, 3-5 bandwidth aggregation 3-3 bidirectional ﬂow control 1-3 bulletin board service C-1

C

cables 2-5, 2-7, 2-9, 3-1

calculating power consumption for Advanced

RPS 2-11

carrier integrity monitor 1-4command line interface (CLI) A-1CompuServe C-3conﬁguration 1-1,A-1

auto-negotiation 1-3forced link A-8

conﬁguring port settings A-5connections

console port A-2downlink 2-5guidelines 3-1power workgroup 3-2uplink 3-5

console interface (CLI) A-1console port 2-3,A-1

connecting A-2requirements A-2

conventions

notice icons, About This Guide 1 text, About This Guide 2

conventions, notice icons, About This Guide 1 CSMA/CD 1-1

D

DC power 2-9

default port conﬁguration settings, restoring A-14desktop placement of hub 2-5

disabling a port A-7displaying hub status A-13downlinks 1-2,2-2

aggregating servers 3-2aggregating switches 3-3cabling 2-5connections 2-5

ﬂow control 1-3

Image 65

3Com Hub 1000 SX manual Index, Symbols, Numbers

Contents

A member of the 3Com SuperStack II System SuperStack II Hub 1000 SXUser Guide UNITED STATES GOVERNMENT LEGENDS 3Com Corporation 5400 Bayfront Plaza Santa Clara, CaliforniaABOUT THIS GUIDE 1 INTRODUCTION CONTENTS2 INSTALLING THE HUB POST Messages A USING THE CONSOLE PORT3 MAKING CONNECTIONS GLOSSARY INDEX 3COM CORPORATION LIMITED WARRANTY SPECIFICATIONSTECHNICAL SUPPORT FCC CLASS A VERIFICATION STATEMENTPage FIGURES Page Port Conﬁguration Menu TABLESPage Icon ABOUT THIS GUIDENotice Type DescriptionSETDEFAULT !0 -IP NETaddr = CommandsMenu commands and buttonsGeneral Description INTRODUCTIONHub 1000 SX and Uplink DownlinksFull-Duplex OperationFlow Control Functions Features andSuperStack II Hub 1000 SX User Guide INSTALLING THE HUBHub Description The hub’s front and rear panels are shown in Figure Connecting the Hub Installing and4 Repeat steps 2 and 3 for the other side of the hub Table 2-1 Downlink Connections ConnectorMaximum Cable TypeIndicator Table 2-2 Hub 1000 SX IndicatorsColor StatusGBIC Module Connecting aInstalling and The gigabit interface connector GBIC port on the rear panel of thePower Systems Using OptionalCabling Options Power ModulesTable 2-4 Advanced RPS Conﬁguration Options A hub connects to a UPS unit through the hub’s AC power cordYou can connect a UPS unit to an Advanced RPS unit as long as you do not exceed the maximum wattage 325 watts for the UPS unit. To verify that the UPS unit’s maximum wattage is not exceeded, calculate the total power consumption of all units connected to the Advanced RPS. If the result is less than 325 watts, your conﬁguration is safe if the result is greater than 325 watts, then there are too many units connected to the Advanced RPS Page Table 3-1 Gigabit Ethernet Maximum Cable Lengths MAKING CONNECTIONSAggregating Power WorkgroupServers Connecting aThe Hub 1000 SX does not support bandwidth aggregation trunking SwitchesAggregating You can use the Hub 1000 SX downlinks to aggregate 10/100 Mbps3-4 CHAPTER 3 MAKING CONNECTIONS Figure 3-3 Aggregated Switches ConnectionThe best use of the hub uplink is as a backbone connection to a 3Com ConnectingFigure 3-4 Mixed Connection Table 3-2 Troubleshooting Tips Figure 3-6 Uplink Connection to a 10/100 Mbps SwitchSymptom SolutionUSING THE CONSOLE PORT With Power Connecting theRequirements Console PortWith Power from powerTo connect the console port when the hub is disconnected Connecting the Console Port A-3After 4 minutes of inactivity, the CLI logs off automatically Logging Onmessage, return the hub to the supplier Port Settings PasswordChanging the ConﬁguringTo display the Port Conﬁguration menu Table A-2 Port Conﬁguration Menu Configuring Port SettingsA-8 APPENDIX A USING THE CONSOLE PORT Configuring Port Settings and be conﬁgured to receive pause frames Configuring Port Settings A-11 Hub Status Displayingmatrix, Y indicates yes and n indicates no. See Table A-3 Table A-3 Hub Status InformationDisplaying Hub Status A-13 A-14 APPENDIX A USING THE CONSOLE PORT Restoring the Factory Default SettingsFirmware Image Updating theentering option Checking theXmodem-CRC To transfer the ﬁrmware image ﬁle log in again. To restart the ﬁle transfer, repeat steps 6 and during a ﬁrmware update, the CLI displays the following messageLogging Off While saving port settings or Table A-4 File Transfer Error MessagesTable A-5 Fatal Error Messages Environmental Operating Ranges SPECIFICATIONSPhysical Dimensions Page Board Service ServicesTECHNICAL SUPPORT Online TechnicalAccess by Digital Modem Access by Analog Modem1 408 654 C-2 APPENDIX C TECHNICAL SUPPORTLocal access numbers are available within the following countries Czech Republic/Slovak Santa Clara, CaliforniaCentral European HQ 305 261 3266 Miami, FloridaTo obtain an RMA number, call or fax Page GLOSSARY delay their retransmissions for a random length of time Carrier Sense Multiple Access/Collision Detection. Channel accesscable is based on CSMA/CD Carrier Sense Multiple Access/Collision access methodincoming IEEEﬂow control Mbpscontrol. See also asymmetric ﬂow control, ﬂow control, pause frame Numbers SymbolsINDEX Page Switch 9300 3-2, 3-3 Page STANDARD WARRANTY SERVICE 3Com Corporation LIMITED WARRANTYHARDWARE SOFTWAREGOVERNING LAW FCC CLASS A VERIFICATION STATEMENTLIMITATION OF LIABILITY